{
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  "checkedAt": "2026-09-09",
  "scope": "Distributed seed-42 checkpoints and same-runtime continuations. No full trajectory from tick zero or cross-engine equivalence is established.",
  "method": {
    "lineage": "Count every species record, parent edge, count > 0, count == 0 and maximum parent-edge depth with root depth 0; recount creature memberships independently.",
    "replay": "Restore each checkpoint in two isolated sequential Node v22.11.0 worker realms; compare canonical complete world state before continuing; advance each by 100 ticks with stats:false; compare canonical endpoint-state SHA-256. JSON object keys are sorted and every array retains its order."
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    "seed": "42",
    "totalSpecies": 71,
    "parentEdges": 70,
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    "extinct": 29,
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    "population": 5587
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      "equal": true,
      "metricsPurity": true
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      "equal": true,
      "metricsPurity": true
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    {
      "checkpoint": "s42-t9000",
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}